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# Exam

## Exam

### Pregunta

1.- Find out the x in this proportion:

a) x = 12.5

b) x = 12

c) x = 13

d) x = 13.5

### Pregunta

2.-  The magnitudes side of a rectangle and its area have  ...

#### Respuestas

a) a direct proportionality relationship

b) an inverse porportionality relationship

c) no relationship

d) None of them

### Pregunta

3.- If we have 1000 kg of food for cows, the magnitudes number of cows and days the food lasts have...

#### Respuestas

a) a direct proportionality relationship

b) an inverse proportionality relationship

c) no relationship

d) none of them

### Pregunta

4.- If 7 kg of sweets costs 1.75 €, how much does 3 kg cost?

a) 1.50 €

b) 0.75 €

c) 1 €

d) None of them

### Pregunta

5.- If I travel at 50 Km/h, it takes 1 hour and 30 minutes to complete the trip. How long will it take if I travel at 75 km/h?

#### Respuestas

a) 1 hour

b) 1 hour and 20 minutes

c)  2 hour and 15 minutes

d) 2 hours and 25 minutes

### Pregunta

6.- In a central post office, 2 machines categorize 1.600 packages in 8 hours. How many machines will be needed to categorize 2.400 packages in 6 hours?

a) 5 machines

b) 6 machines

c) 4 machines

d) 3 machines

### Pregunta

7.- A suit that costs 100 €, had a 20% discount last month. This month they have increased the price by 20%. Now its price is

a) 100 €

b) 110€

c) 96 €

d) None of them

### Pregunta

8.- A bank offers an interest rate of 2%. What interest will we obtain if we deposit 1200 € for 5 years?

a) 100 €

b) 120 €

c) 80 €

d) 150 €

### Pregunta

9.- A grandfather decides to distribute 4.600 € between his three grandchildren, but instead of giving a third to each one he prefers to do it proportionally to the age of every grandchild, whose ages are 7,12 and 21 years old. How much will each of them receive?

#### Respuestas

a) 805, 1380 and 2415 €

b) 800, 1400 and 2400 €

c) 810, 1380 and 2410 €

d) 800, 1350 and 2450 €

### Pregunta

10.- A grandfather decides to distribute 4.600 € between his three grandchildren, but instead of giving a third to each one he prefers to do it in an inverse proportional way to the age of every grandchild, whose ages are 7,12 and 21 years old. How much will each of them receive?

#### Respuestas

a) 2400, 1600 and 600 €

b) 2200, 1600 and 800 €

c) 2000, 1800 and 800 €

d) 2400, 1400 and 800 €